Gameboy game builder improvements

I spent some more time with my Gameboy game builder (AKA classicgb) recently, and the results are surprisingly good. I spent some time adding scroll animations, as well as tweaking the collision physics a bit. There have also been a lot of more minor changes in the builder. The end result is that created games feel much more solid!

There is still plenty to do; the editor still isn’t all that user-friendly, and the map editor is sorely missing some convenience features, to name a few. I’ll likely continue experimenting with this in the near future.